CCNA Complete Guide 2nd Edition.pdf - Cisco Learning Home

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Version Header Length Time To Live Version Header Length Time To Live Identification Identification Original IPv4 Datagram New IPv4 Datagram Type of Service TCP Header TCP Payload Total Length Flags Fragmentation Offset Protocol = TCP Header Checksum Source IP Address Destination IP Address TCP Header TCP Payload Figure A6-23: IPsec in AH Transport Mode Total Length Protected by AH Auth Data Figure A6-24: IPsec in AH Tunnel Mode 299 Version Header Length Time To Live Identification Type of Service TCP Header TCP Payload Total Length Flags Fragmentation Offset Protocol = AH Header Checksum Source IP Address Destination IP Address Next Header = TCP AH Length Reserved AH SPI (Security Parameters Index) AH Sequence Number Authentication Data (MD5 or SHA-1 hash) Original IPv4 Datagram New IPv4 Datagram Type of Service Flags Fragmentation Offset Protocol = TCP Header Checksum Source IP Address Destination IP Address Protected by AH Auth Data Original IP Packet Version Header Length Time To Live Identification Type of Service Total Length Flags Fragmentation Offset Protocol = AH Header Checksum Source IP Address Destination IP Address Next Header = IP AH Length Reserved Version Header Length Time To Live AH SPI (Security Parameters Index) AH Sequence Number Authentication Data (MD5 or SHA-1 hash) Identification Type of Service TCP Header TCP Payload Total Length Flags Fragmentation Offset Protocol = TCP Header Checksum Source IP Address Destination IP Address Copyright © 2008 Yap Chin Hoong yapchinhoong@hotmail.com
Version Header Length Time To Live Version Header Length Time To Live Identification Identification Original IPv4 Datagram New IPv4 Datagram Type of Service TCP Header TCP Payload Total Length Flags Fragmentation Offset Protocol = TCP Header Checksum Source IP Address Destination IP Address Encrypted Data Figure A6-25: IPsec in ESP Transport Mode Total Length Authenticated Data Figure A6-26: IPsec in ESP Tunnel Mode 300 Version Header Length Time To Live Identification Type of Service Total Length Flags Fragmentation Offset Protocol = ESP Header Checksum Source IP Address Destination IP Address ESP SPI (Security Parameters Index) Padding (variable) ESP Sequence Number TCP Header TCP Payload Padding Length Authentication Data (optional) Original IPv4 Datagram New IPv4 Datagram Type of Service TCP Header TCP Payload Flags Fragmentation Offset Protocol = TCP Header Checksum Source IP Address Destination IP Address Protected by AH Auth Data Original IP Packet Authenticated Data Version Header Length Time To Live Version Header Length Time To Live Identification Identification Type of Service Total Length Next Header = TCP Flags Fragmentation Offset Protocol = ESP Header Checksum Source IP Address Destination IP Address ESP SPI (Security Parameters Index) Type of Service Padding (variable) ESP Sequence Number TCP Header TCP Payload Total Length Flags Fragmentation Offset Protocol = TCP Header Checksum Source IP Address Destination IP Address Padding Length Authentication Data (optional) Next Header = IP Copyright © 2008 Yap Chin Hoong yapchinhoong@hotmail.com
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CCNA Complete Guide 2nd Edition Yap
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CCNA Complete Guide 2nd Edition Cop
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Upper Layers Lower Layers Applicati
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Cisco Hierarchical Model - Defined
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Header Length (4) Source Port (16)
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- Socket is a communication channel
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- The length of an IP address is 32
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- The following section discusses s
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- Below lists the 2 sublayers in th
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- Each switch port does not share t
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- Below lists the switch internal p
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Physical Layer - The physical layer
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- Another way to reduce emissions i
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Figure 3-7: Single-Mode and Multimo
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Wireless AP Switch Figure 3-8: 802.
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- Below lists the common IOS CLI er
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RT1#show running-config interface F
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- Cisco IOS treats a mistyped comma
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- Below describes the STP convergen
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- Refer back to Figure 5-1B, assume
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- A switch running RSTP only need 6
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Port Security Configuration - Port
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SW2# 00:25:00: STP: VLAN0001 new ro
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- Both protocols utilize a 12-bit V
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Layer 4 Switching (Content Switchin
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- VTP Pruning provides a way to pre
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VLAN Trunking Protocol Configuratio
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- VLAN information will not be prop
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- Private IP addresses are non-rout
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- Some materials calculate the numb
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Cisco Discovery Protocol (CDP) c250
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- CDP is enabled by default. The no
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Troubleshooting IP - Internet Contr
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- Firstly, PC1 purposely sends out
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- Below describes the operation of
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Maximum Hop Count Hop count metric
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- Invalid Timer specifies how long
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- Initial configuration on RT2: Rou
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- Static Routing configuration on R
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- RIPv1 and IGRP are classful routi
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- IGRP configuration on RT2: RT2(co
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MISC IP Routing Commands - The pass
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- OSPF uses a reliable protocol to
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- OSPF areas break up a network so
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- EIGRP uses the same formula as us
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- Autosummarization EIGRP supports
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- OSPF Single-Area configuration on
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- The show ip ospf database EXEC co
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OSPF Multiarea Configuration Area 1
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- Below lists the different termino
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- Verify the EIGRP configuration on
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- When a link to a neighbor fails,
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- Below shows the beauty of VLSM. B
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- RT1 and RT3 are summarizing route
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- RIPv1 and IGRP perform autosummar
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RT1#sh ip route Gateway of last res
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MTU and Fragmentation - Maximum Tra
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- Figure 17-1 shows the usage of CI
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- Static NAT performs one-to-one ma
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172.16.1.1 172.16.1.2 172.16.1.3 17
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- Below shows the IP NAT debugging
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- The access list indicates whether
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- Access Control List (ACL) is the
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- Below lists some other usages of
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- Standard IP Access Lists configur
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RT2#sh access-lists example01 Exten
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WAN Network RT1 CSU/DSU CSU/DSU RT2
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Remote Access Technologies - Remote
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Digital Subscriber Lines (DSL) - DS
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Point-to-Point Serial Links (Leased
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- Comparisons between synchronous a
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- PPP Encapsulation configuration o
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- The function of the username {rem
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- 3 LMI protocol options are availa
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- Comparisons between Frame Relay L
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RT1 RT2 RT3 Figure 23-7A: RT1 with
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- IETF Frame Relay encapsulation ty
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RT1 Frame Relay RT2 DLCI 101 Frame
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- The interface serialx.y point-to-
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- Frame Relay Multipoint Subinterfa
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- Rate Shifting or Adaptive Rate Se
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- By operating in the 5GHz radio ba
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- Every packet from every access po
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Virtual Interface (mandatory) Servi
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Wireless Security - Organizations t
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Wireless Management - WLANs require
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Cisco Wireless LAN Configuration -
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- ISDN offers very fast call setup
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- ISDN was designed to reuse the ex
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- ISDN PRIs are often being used fo
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- Routing protocols are unable to l
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DDR Step 4: Determining when to ter
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- The show interfaces bri{num:0 | 1
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DDR Dialer Profiles Configuration -
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- Note: IP addresses are configured
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- Below show the routing tables on
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- The configuration above defines 2
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cisco Systems, Inc. 170 West Tasman
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Catalyst Switch IOS Upgrade Procedu
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Catalyst Switch IOS Upgrade Procedu
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Cisco Router Password Recovery Proc
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Catalyst Switch Password Recovery P
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Switch> Switch>en Switch#rename con
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- The 3 possible Frame Relay PVC st
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Constructing a Compound Frame Relay
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8. Once the frame is completed, it
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Decimal Hex Binary Decimal Hex Bina
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MISC Basic Networking Notes - The m
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MISC Data Link Layer Notes - Ethern
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- The 5-4-3 repeater deployment rul
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Ethernet Autonegotiation and Duplex
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The TCP Connection States timeout s
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- Q: How does a client application
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Page 253 and 254: TCP Selective Acknowledgment (SACK)
Page 255 and 256: - Local Proxy ARP is used when ther
Page 257 and 258: Spanning Tree Protocol Port ID - Wh
Page 259 and 260: The Problem of Router-on-a-Stick Co
Page 261 and 262: - Sample Subnet Zero configuration:
Page 263 and 264: The permanent keyword in the Static
Page 265 and 266: RIPv1 and VLSM RT1 RT4 Figure A6-9:
Page 267 and 268: - Below shows the NAT operations on
Page 269 and 270: Bidirectional (2-Way) NAT PC1 172.1
Page 271 and 272: - Note: A router does not require a
Page 273 and 274: The Access Control List established
Page 275 and 276: Switch Port Access Control Lists -
Page 277 and 278: - Below shows a sample Dynamic Acce
Page 279 and 280: Router(config)#ip access-list exten
Page 281 and 282: Optional PPP Commands - The compres
Page 283 and 284: - Below shows the output of the PPP
Page 285 and 286: - Below shows the output of the PPP
Page 287 and 288: - Below configure the username and
Page 289 and 290: IEEE 802.11 Standards and Specifica
Page 291 and 292: - Figure A6-20 shows the frame form
Page 293 and 294: - Below lists the IEEE 802.11 manag
Page 295 and 296: IEEE 802.11 Types and Subtypes Type
Page 297 and 298: Client (Supplicant) EAPOL-Start EAP
Page 299 and 300: - IPsec-based VPN is comprised of 2
Page 301: - IPsec supports the following 3 ty
Page 305 and 306: - The authentication pre-share ISAK
Page 307 and 308: Troubleshooting ISDN E1/T1 Physical
Page 309 and 310: - Below addresses ISDN E1/T1 contro
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Page 313 and 314: Troubleshooting ISDN Layer 3 - Only
Page 315 and 316: ISDN Loopback Test Call - In a loop
Page 317 and 318: 96 Number changed. The called numbe
Page 319 and 320: C2 Channel type not implemented. Th
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Page 323 and 324: locking state, STP, 39 BNC, 27 bool
Page 325 and 326: show vlan, 57 show vtp status, 58 s
Page 327 and 328: framing, 22 MAC addresses, 22 stand
Page 329 and 330: K keepalives EIGRP, 95 Frame Relay,
Page 331 and 332: PAT (Port Address Translation), 127
Page 333 and 334: star topologies, 25 startup-config
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